Home / 209,711.36-289,383.90-117,823.45

Finding the Fourth Proportional to 209,711.36, 289,383.90 and 117,823.45

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Solution

The fourth proportional to 209,711.36, 289,383.90 and 117,823.45 is: 162,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,711.36 : 289,383.90 = 117,823.45 : x
  2. Step 2: Convert to fraction form
    209,711.36/289,383.90 = 117,823.45/x
  3. Step 3: Cross multiply
    209,711.36x = 289,383.90 × 117,823.45
  4. Step 4: Simplify right side
    209,711.36x = 34,096,208,849.75
  5. Step 5: Solve for x
    x = 34,096,208,849.75/209,711.36
  6. Step 6: Final answer
    x = 162,586.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.